139 entries under silly topic. ×

12
delirious(adjective, wild, foolish, crazy)
12
idiotic(adjective, weak, simple, knowledge, ability)
12
mental(adjective, simple, foolish, mad)
12
nuts(noun, adjective, slang, wild)
12
screwy(adjective, slang, wild, foolish)
11
cracked(adjective, informal, wild, foolish)
11
moonstruck(noun, adjective, foolish, stupid)
11
of unsound mind(expression, adjective, idiom, mad)
11
touched(adjective, wild, foolish, stupid)
11
unhinged(adjective, foolish, crazy, mad)
10
madcap(noun, adjective, person, crazy)
10
screwball(noun, adjective, slang, wild)
9
bedlamite(noun, adjective, person, foolish)
9
dippy(adjective, weak, knowledge, slang, ability)
9
dotty(adjective, weak, simple, foolish)
9
foolish(adjective, weak, simple, knowledge, ability)
8
kooky(adjective, weak, simple, wild)
8
potty(adjective, wild, foolish, crazy)
8
wild(adjective, foolish, stupid, crazy)
7
daffy(adjective, weak, simple, informal)
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APASmart Define. (2015). lunatic thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/lunatic/thesaurus/synonyms
ChicagoSmart Define. 2015. "lunatic thesaurus" https://smartdefine.org/lunatic/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, lunatic thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/lunatic/thesaurus/synonyms>.
MLASmart Define. "lunatic thesaurus" 6 August 2015. Web. 26 September 2026. <https://smartdefine.org/lunatic/thesaurus/synonyms>